Corbyn is a leaver Beddy, I thought everyone knew that. Nobody can know for sure, but going by what has been said by Labour people inside and outside Parliament, they wouldn’t have painted themselves into a corner like May has with restrictive red lines about the Customs Union. We would have a permanent Customs Union with the EU which would give us frictionless trade with the EU Single Market, but still leave us free to negotiate deals with other countries.
We would definitely not be in the mess we are in now.